Table 1 Laboratory Data from Initial Admission

Blood tests

Immunoserology

White Blood Cell

6,900 /μL

IgG

1,480 mg/dL

Hemoglobin

11.9 g/dL

IgA

203 mg/dL

Platelet

19.5 × 10⁴ /μL

IgM

88 mg/dL

Total protein

6.3 g/dL

Complement 3

122 mg/dL

Albumin

3.6 g/dL

Complement 4

30 mg/dL

Urea nitrogen

22 mg/dL

CH50

60 U/mL

Creatinine

1.12 mg/dL

ASO

190 IU/mL

eGFR

53.7 mL/min/1.73 m²

ASK

 × 1280

Sodium

143 mEq/L

ANA

 <  × 40

Potassium

4.0 mEq/L

Anti-GBM antibody

 < 2.0 U/mL

Chloride

107 mEq/L

MPO-ANCA

 < 1.0 U/mL

Calcium

8.9 mg/dL

PR3-ANCA

4.9 U/mL

Phosphate

3.0 mg/dL

HBs-Ag

-

Total bilirubin

0.6 mg/dL

HCV-Ab

-

AST

14 IU/L

ALT

9 IU/L

Urinalysis

LDH

167 IU/L

specific gravity

1.020

Creatinine kinase

88 IU/L

pH

6.5

C-reactive protein

0.05 mg/dL

Protein

0.82 g/gCr

Red Blood Cell

10–19 /high power Field